CN201255784Y - Video taking lens, camera module and video taking apparatus - Google Patents
Video taking lens, camera module and video taking apparatus Download PDFInfo
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- CN201255784Y CN201255784Y CNU2008202075479U CN200820207547U CN201255784Y CN 201255784 Y CN201255784 Y CN 201255784Y CN U2008202075479 U CNU2008202075479 U CN U2008202075479U CN 200820207547 U CN200820207547 U CN 200820207547U CN 201255784 Y CN201255784 Y CN 201255784Y
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- lens
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- focal length
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B13/00—Optical objectives specially designed for the purposes specified below
- G02B13/001—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras
- G02B13/0015—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design
- G02B13/002—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design having at least one aspherical surface
- G02B13/004—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design having at least one aspherical surface having four lenses
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B13/00—Optical objectives specially designed for the purposes specified below
- G02B13/22—Telecentric objectives or lens systems
Abstract
The utility model provides a camera lens, a camera module group and a camera device, wherein a positive first lens has at least one aspheric surface and a convex surface at object side; a negative lens has a concave surface at image side; a positive third lens of meniscus form is near the optical axis and has a concave surface toward the object side; a fourth lens has two aspheric surfaces; f means the focus of the whole system, f1 and f3 are the focuses of the first and the third lenses, D5 is the center thickness of the third lens, MIN(D) is the minimum center thickness of these lenses, DL is the thickness of the lens system, 0.34<=f3/f<=0.9, 0.19<=D5/f<=0.5, 0.65<=f1/f<=0.85, 0.1<=MIN(D)/f<=1.0, 3.0mm<=DL<=4.0mm, therefore, the whole length is reduced, and the utility model can be applied in batch production, with confirmed thickness (DL) of the lens system in a regulated range and good optical performance.
Description
Technical field
The present invention relates to a kind of on CCD (Charge Coupled Device) or CMOS imaging apparatuss such as (ComplementaryMetal Oxide Semiconductor) imaging lens system of the optical image of imaging subject, to convert the camera module of image pickup signal by the optical image that this imaging lens system forms to, and carry this imaging lens system and digital stillcamera of photographing or mobile phone and the personal digital assistant picture pick-up devices such as (PDA:Personal Digital Assistance) of being with camera.
Background technology
In recent years, follow PC the popularizing of general family etc., the digital static camera that image informations such as the landscape of photography or bust can be input to PC is being popularized rapidly.And the Load Images input is also more and more with the phenomenon of camera module on mobile phone.Use imaging apparatuss such as CCD or CMOS at equipment with this camera function.In recent years, the densification of those imaging apparatuss development, imaging lens system whole to picture pick-up device and that be loaded into it also requires compactedness.And the high pixelation of imaging apparatus requires high-resolution, the high performance of imaging lens system also in development simultaneously.
At this requirement, for example, in order to seek densification (shorteningization of optical axis direction) cheap, and high-resolutionization, and the lens number is made as 4 formations, in order to seek high performance, can consider actively to use aspheric surface.Disclose promising this 4 at patent documentation 1 to 4 and constitute and use aspheric imaging lens system.
2004-No. 302057 communiques of [patent documentation 1] patent disclosure
2007-No. 17984 communiques of [patent documentation 2] patent disclosure
2002-No. 228922 communiques of [patent documentation 3] patent disclosure
The 6th, 917, No. 479 instructionss of [patent documentation 4] United States Patent (USP)
As above-mentioned picture pick-up device in, require to consider large-lot production, and the deterioration of optical property be restricted to irreducible minimum, and reduce the length (=highly) of the optical axis direction of camera module integral body.Yet,, be difficult to satisfy the standard or the apparent standards such as the cut on the final lens face, foreign matter of the ejaculation angle of light usually if lens back focal length (from the position of the most close picture side of lens to the distance of image planes) merely is made as too small.And, if merely be made as the thickness DL of lens combination (DL: lens through thickness=from the lens face summit of the most close object side is to the distance on the most close picture side lens face summit) too small, then be necessary to be made as the center thickness D of each lens key element too small, or make aspheric effect strong excessively, by lens shape take place when the moulding innerly to distort, axle offset is tilted, worsen based on the manufacturing well-formedness of appearance standard.Thereby, under the situation of carrying out the total length shorteningization, be necessary the thickness DL of lens back focal length, lens combination, the center thickness of each lens key element etc. are established little, and assemble these under proper condition evenly, and when producing in batches, keep the good optical performance.
Above-mentioned patent documentation 1 described imaging lens system is because diaphragm at the rear side of the 2nd lens, therefore if carry out the total length cripeturaization, then exists the ejaculation angle of light to become big problem easily.And, disclose the imaging lens system of 4 formations of various kinds at patent documentation 2, but be fit closely design to each configuration example hardly.For example, about the embodiment (embodiment that represents the value of 4 front and back) of the little type of focal length, total length with respect to the ratio of focal length greater than 1.25.The lens of embodiment beyond it are bigger, think not fully take into account manufacturing at the center thickness of miniaturization etc.And, at the imaging lens system shown in patent documentation 3 and the patent documentation 4 because the focal length of embodiment, total length, and lens thickness all big, therefore, think not fully take into account in recent years manufacturing at the center thickness of the miniaturization of imaging apparatus etc.
The present invention is referred from this problem points and proposes, its purpose is, provide a kind of and keep high imaging performance when using the cripeturaization that aspheric surface keeps total length, and can realize making the lens combination of appropriateness imaging lens system, carry camera module and picture pick-up device that this imaging lens system can obtain high-resolution image pickup signal.
Summary of the invention
Imaging lens system of the present invention is characterised in that to possess successively from object side: the 1st lens, and its at least 1 is aspherical shape, and the face of object side is convex surface near optical axis, and has positive light amplification rate; The 2nd lens, its face as side is a concave surface near optical axis, and has negative light amplification rate; The 3rd lens, its near optical axis with concave surface towards object side, and have positive meniscus shaped lens; The 4th lens, its two sides are aspherical shape, and as the face of side near optical axis for concave shape, be convex form at periphery, and, meet the following conditions formula and constitute:
0.35≦f3/f≦0.9?……(1)
0.19≦D5/f≦0.5?……(2)
0.65≦f1/f≦0.85?……(3)
0.1≦MIN(D)/f≦1.0?……(4)
3.0mm≦DL≦4.0mm?……(5)
Herein,
F: whole focal length,
F1: the focal length of the 1st lens
F3: the focal length of the 3rd lens,
D5: the center thickness of the 3rd lens,
MIN (D): the value of minimum center thickness among the 1st to the 4th lens,
DL: the distance from the picture optical axis on summit, side of object side vertex of surface to the 4 lens of the 1st lens,
In addition, the unit of f, the MIN (D) in formula (4) is mm.
In imaging lens system of the present invention, be during 4 lens constitute as a whole, the thickness DL that keeps lens combination in suitable scope, and effectively use aspheric surface to seek the optimization of each lens shape, and, seek the optimization that lens constitute by satisfying the defined terms formula, and when having considered manufacturing, obtained total length cripeturaization and high imaging performance.
And, further, adopt following desirable formation and satisfied by suitable selection, consider that manufacturing also can help the cripeturaization or the imaging performance of total length more.
In imaging lens system of the present invention, on optical axis, than on
The vertex of surface position of the picture side of the 1st lens
More close object side place, perhaps on optical axis last
The vertex of surface position of the picture side of the 1st lens
With last
The vertex of surface position of the object side of the 2nd lens
Between join
Diaphragm, and the formula that further meets the following conditions:
υ1—(υ2+υ3+υ4)/3≧0?……(6)
—1.2≦f4/f≦—0.25?……(7)
0.71≦f1/f≦0.85 ……(3′)
Herein,
F: whole focal length,
F1: the focal length of the 1st lens,
F4: the focal length of the 4th lens,
The Abbe number of 1: the 1 lens of υ,
The Abbe number of 2: the 2 lens of υ,
The Abbe number of 3: the 3 lens of υ,
The Abbe number of 4: the 4 lens of υ.
In imaging lens system of the present invention, especially, on optical axis, diaphragm is configured in the more close object side in vertex of surface position than the picture side of the 1st lens, formula further preferably meets the following conditions.
0.85≦DL/f≦0.93 ……(8)
0.35≦f3/f≦0.71?……(1′)
Herein,
F: whole focal length,
F3: the focal length of the 3rd lens,
DL: the distance from the picture optical axis on summit, side of object side vertex of surface to the 4 lens of the 1st lens.
And, in imaging lens system of the present invention, preferably suitably optionally meet the following conditions.
—1.0≦f/R3≦0.4?……(9)
2.05≦f/R1≦3.3?……(10)
Herein,
F: whole focal length,
R3: the paraxial radius-of-curvature of the face of the object side of the 2nd lens,
R1: the paraxial radius-of-curvature of the face of the object side of the 1st lens.
And in imaging lens system of the present invention, the face as side of the 1st lens is preferably convex form near optical axis.
And, the 1st lens, the 2nd lens, the 3rd lens, and the 4th lens constitute by resin material respectively and also can.Thus, help the reduction of manufacturing cost.But,, for example constitute the 1st lens and also can by glass material in order to seek high performance.
Camera module according to the present invention possesses: the imaging apparatus of imaging lens system of the present invention, output and the corresponding image pickup signal of optical image of the formation of imaging lens system thus.
In camera module according to the present invention, the high-resolution optical image according to based on imaging lens system of the present invention can obtain high-resolution image pickup signal.And imaging lens system according to the present invention is because of seeking the total length cripeturaization, so as seeking miniaturization with imaging lens system camera module assembled integral body.
Possess based on camera module of the present invention based on picture pick-up device of the present invention.
In based on picture pick-up device of the present invention, the high-resolution optical image according to obtaining based on camera module of the present invention can obtain high-resolution image pickup signal, can obtain high-resolution photographs according to this image pickup signal.
According to imaging lens system of the present invention, in integral body is during 4 lens constitute, the thickness DL that in proper range, keeps lens combination, and use aspheric surface to seek the optimization of each lens shape efficiently, and, by satisfying the defined terms formula and seek the optimization that lens constitute, so, high imaging performance can be in the cripeturaization of total length, kept, and the good lens combination of appropriateness can be realized making.
And, according to camera module of the present invention, the corresponding image pickup signal of optical image that the imaging lens system of output and the invention described above of cripeturaization by having total length and high imaging performance forms is so can obtain high-resolution image pickup signal when module integral body is sought miniaturization.
And, according to picture pick-up device of the present invention, because of having loaded the camera module of the invention described above, so when can seek the miniaturization of camera part, obtain high-resolution image pickup signal.And can obtain high-resolution photographs according to this image pickup signal.
Description of drawings
Fig. 1 is the 1st configuration example of the related imaging lens system of expression one embodiment of the present invention, is the lens profile figure corresponding to embodiment 1.
Fig. 2 is the 2nd configuration example of the related imaging lens system of expression one embodiment of the present invention, is the lens profile figure corresponding to embodiment 2.
Fig. 3 is the 3rd configuration example of the related imaging lens system of expression one embodiment of the present invention, is the lens profile figure corresponding to embodiment 3.
Fig. 4 is the 4th configuration example of the related imaging lens system of expression one embodiment of the present invention, is the lens profile figure corresponding to embodiment 4.
Fig. 5 is the 5th configuration example of the related imaging lens system of expression one embodiment of the present invention, is the lens profile figure corresponding to embodiment 5.
Fig. 6 is the 6th configuration example of the related imaging lens system of expression one embodiment of the present invention, is the lens profile figure corresponding to embodiment 6.
Fig. 7 is the 7th configuration example of the related imaging lens system of expression one embodiment of the present invention, is the lens profile figure corresponding to embodiment 7.
Fig. 8 is the figure of the basic lens data of the related imaging lens system of expression embodiments of the invention 1.
Fig. 9 is the figure of the basic lens data of the related imaging lens system of expression embodiments of the invention 2.
Figure 10 is the figure of the basic lens data of the related imaging lens system of expression embodiments of the invention 3.
Figure 11 is the figure of the basic lens data of the related imaging lens system of expression embodiments of the invention 4.
Figure 12 is the figure of the basic lens data of the related imaging lens system of expression embodiments of the invention 5.
Figure 13 is the figure of the basic lens data of the related imaging lens system of expression embodiments of the invention 6.
Figure 14 is the figure of the basic lens data of the related imaging lens system of expression embodiments of the invention 7.
Figure 15 is the figure of expression about the aspheric data of the related imaging lens system of embodiments of the invention 1.
Figure 16 is the figure of expression about the aspheric data of the related imaging lens system of embodiments of the invention 2.
Figure 17 is the figure of expression about the aspheric data of the related imaging lens system of embodiments of the invention 3.
Figure 18 is the figure of expression about the aspheric data of the related imaging lens system of embodiments of the invention 4.
Figure 19 is the figure of expression about the aspheric data of the related imaging lens system of embodiments of the invention 5.
Figure 20 is the figure of expression about the aspheric data of the related imaging lens system of embodiments of the invention 6.
Figure 21 is the figure of expression about the aspheric data of the related imaging lens system of embodiments of the invention 7.
Figure 22 gathers the figure of expression about the value of conditional to each embodiment.
Figure 23 is the aberration diagram of all aberrations of the related imaging lens system of expression embodiments of the invention 1, and (A) expression spherical aberration, (B) expression astigmatism, (C) represents to distort.
Figure 24 is the aberration diagram of all aberrations of the related imaging lens system of expression embodiments of the invention 2, and (A) expression spherical aberration, (B) expression astigmatism, (C) represents to distort.
Figure 25 is the aberration diagram of all aberrations of the related imaging lens system of expression embodiments of the invention 3, and (A) expression spherical aberration, (B) expression astigmatism, (C) represents to distort.
Figure 26 is the aberration diagram of all aberrations of the related imaging lens system of expression embodiments of the invention 4, and (A) expression spherical aberration, (B) expression astigmatism, (C) represents to distort.
Figure 27 is the aberration diagram of all aberrations of the related imaging lens system of expression embodiments of the invention 5, and (A) expression spherical aberration, (B) expression astigmatism, (C) represents to distort.
Figure 28 is the aberration diagram of all aberrations of the related imaging lens system of expression embodiments of the invention 6, and (A) expression spherical aberration, (B) expression astigmatism, (C) represents to distort.
Figure 29 is the aberration diagram of all aberrations of the related imaging lens system of expression embodiments of the invention 7, and (A) expression spherical aberration, (B) expression astigmatism, (C) represents to distort.
Figure 30 is the stereographic map of a configuration example of the related camera module of expression one embodiment of the present invention.
Figure 31 is the stereographic map of a configuration example of the related picture pick-up device of expression one embodiment of the present invention.
Among the figure: L1-the 1st lens, L2-the 2nd lens, L3-the 3rd lens, L4-the 4th lens, St-aperture diaphragm, Ri-from the radius-of-curvature of i lens face of object side, Di-from the face interval of object side i and i+1 lens face, Z1-optical axis.
Embodiment
Below, with reference to accompanying drawing embodiments of the present invention are elaborated.
The 1st configuration example of representing to have the related imaging lens system of one embodiment of the present invention at Fig. 1.(Fig. 8, lens Figure 15) constitute this configuration example corresponding to the described later the 1st numerical value embodiment.Equally, the section formation of the 2nd to the 7th configuration example that will constitute corresponding to the lens of the 2nd to the 7th numerical value embodiment described later is shown in Fig. 2～Fig. 7.In Fig. 1～Fig. 7, symbol Ri represents, according to the radius-of-curvature that is the 1st with the face of the lens key element of close object side, encloses i face of symbol along with the mode that increases successively towards picture side (imaging side).Symbol Di represent on the optical axis Z1 of i face and i+1 face face at interval.In addition, because the basic comprising of each configuration example is all identical, therefore, as describing substantially, the configuration example to Fig. 2～Fig. 7 also describes as required in following configuration example with imaging lens system shown in Figure 1.
The related imaging lens system of present embodiment is the various picture pick-up devices that are applicable to imaging apparatuss such as using CCD or CMOS, especially more small-sized portable terminal, for example, the mobile phone of digital stillcamera, band camera, and PDA etc.This imaging lens system, Z1 possesses successively from object side along optical axis: the 1st lens L1, the 2nd lens L2, the 3rd lens L3, the 4th lens L4.At imaging apparatuss (not shown) such as imaging surface (shooting face) Simg of this imaging lens system configuration CCD.(cover glass: カ バ-ガ ラ ス), optics CG such as infrared intercepting filter or low-pass filter also can to dispose the sealing cover glass that is used to protect shooting face between the 4th lens L4 and imaging surface (shooting face) Simg.
Diaphragm St is optical aperture diaphragm, and preferred disposition is in the most close object side.Herein, " the most close object side " is illustrated in the vertex of surface position more close object side of optical axis Z1 than the picture side of the 1st lens L1, also expression for example comprises, on optical axis Z1, diaphragm St is disposed at the situation of vertex of surface position of the object side of the 1st lens L1, or diaphragm St is disposed at the vertex of surface position of object side of the 1st lens L1 and the situation between the picture vertex of surface position of side.Diaphragm St preferred disposition is in more close object side, for example, gets final product disposing between the ora terminalis position E (with reference to Fig. 1) at the face of the object side of the vertex of surface position of the object side of the 1st lens L1 and the 1st lens L1 on the optical axis.
But, also diaphragm St can be disposed between the 1st lens L1 and the 2nd lens L2 (between the vertex of surface position of the object side of the vertex of surface position of the picture side of the 1st lens on the optical axis and the 2nd lens) as the 7th configuration example of Fig. 7.
This imaging lens system, especially at least 1 of the 1st lens L1 is aspherical shape, and the two sides of the 4th lens L4 is an aspherical shape.Preferably for the 2nd lens L2, and the 3rd lens L3 separately, comprise aspheric surface at 1 face at least.
, especially be made as the situation of aspherical shape herein, the 2nd lens L2, the 3rd lens L3 and the 4th lens L4 compare with the 1st lens L1 easily becomes complicated shape, and shape is also variable big.Therefore, the 2nd lens L2, the 3rd lens L3 and the 4th lens L4 all preferably are being made of resin material aspect processability or the manufacturing cost.When paying attention to manufacturing cost, the 1st lens L1 also preferably is made of resin material.But, constitute the 1st lens L1 by glass material and also can in order to seek high performance.
The 1st lens L1 have positive light amplification rate (パ ワ-: power).The 1st lens L1 is preferably, and the face of object side is convex surface near optical axis, is convex form as the face of side near optical axis, thereby is the biconvex shape near optical axis.
The 2nd lens L2 has negative light amplification rate.The 2nd lens L2 is concave surface near optical axis as the face of side.The face of the object side of the 2nd lens L2 is preferably and is concave shape near optical axis, thereby near optical axis is the concave-concave shape.But,, also can be near optical axis the face of object side be made as convex form, thereby near optical axis, be made as meniscus shape as the 4th configuration example of Fig. 4.
The 3rd lens L3 is with the positive meniscus shaped lens of concave surface towards object side near optical axis.The face of the picture side of the 4th lens L4, near optical axis towards being concave shape as side at periphery towards being the aspheric surface of convex form as side.The 4th lens L4, for example, the face of object side is a convex surface near optical axis, thereby is meniscus shape near optical axis.But, also can as the 2nd configuration example of Fig. 2, and the 3rd configuration example of Fig. 3, near the face with object side optical axis is made as concave surface, and makes become the concave-concave shape near optical axis.
This imaging lens system, the formula that meets the following conditions (1)～(4):
0.35≦f3/f≦0.9 ……(1)
0.19≦D5/f≦0.5 ……(2)
0.65≦f1/f≦0.85 ……(3)
0.1≦MIN(D)/f≦1.0?……(4)
3.0mm≦DL≦4.0mm ……(5)
Herein,
F: whole focal length,
F1: the focal length of the 1st lens L1,
F3: the focal length of the 3rd lens L3,
D5: the center thickness of the 3rd lens L3,
MIN (D): the value of minimum center thickness among the 1st lens L1 to the 4 lens L4,
DL: the distance (with reference to Fig. 1) from the picture optical axis on summit, side of object side vertex of surface to the 4 lens L4 of the 1st lens L1.
And the unit of f, MIN (D) in formula (4) is made as mm.
And formula preferably suitably optionally meets the following conditions.
υ1—(υ2+υ3+υ4)/3≧0?……(6)
—1.2≦f4/f≦—0.25?……(7)
0.71≦f1/f≦0.85 ……(3′)
Herein,
F: whole focal length,
F1: the focal length of the 1st lens L1,
F4: the focal length of the 4th lens L4,
The Abbe number of 1: the 1 lens L1 of υ,
The Abbe number of 2: the 2 lens L2 of υ,
The Abbe number of 3: the 3 lens L3 of υ,
The Abbe number of 4: the 4 lens L4 of υ.
Especially, on optical axis in situation than more close object side place, the vertex of surface position configuration diaphragm St of the picture side of the 1st lens L1, formula further preferably meets the following conditions:
0.85≦DL/f≦0.93?……(8)
0.35≦f3/f≦0.71?……(1′)
And, preferably suitably optionally meet the following conditions.
—1.0≦f/R3≦0.4?……(9)
2.05≦f/R1≦3.3?……(10)
Herein,
F: whole focal length,
R3: the paraxial radius-of-curvature of the face of the object side of the 2nd lens L2,
R1: the paraxial radius-of-curvature of the face of the object side of the 1st lens L1.
And formula preferably suitably optionally meets the following conditions:
—1.0≦R1/R2≦0?……(11)
0.9≦(R3+R4)/(R3—R4)≦1.5?……(12)
1.0≦f12/f≦1.6?……(13)
Herein,
F: whole focal length,
F12: the synthetic focal length of the 1st lens L1 and the 2nd lens L2,
R1: the paraxial radius-of-curvature of the face of the object side of the 1st lens L1,
R2: the paraxial radius-of-curvature of the face of the picture side of the 1st lens L1,
R3: the paraxial radius-of-curvature of the face of the object side of the 2nd lens L2,
R4: the paraxial radius-of-curvature of the face of the picture side of the 2nd lens L2.
Figure 30 is a configuration example of the camera module of the related imaging lens system of expression assembling present embodiment.And Figure 31 (A), (B) are as the mobile phone of an example expression band camera of the picture pick-up device of the camera module that loads Figure 30.
Mobile phone at the band camera shown in Figure 31 (A), (B) possesses upper body (basket) 2A and lower case 2B, and both constitute freely along the direction of arrow rotation of Figure 31 (A).Be provided with operating key 21 etc. at lower case 2B.Be provided with camera section 1 (Figure 31 (B)) and display part 22 (Figure 31 (A)) etc. at upper body 2A.Display part 22 is by LCD (liquid crystal panel) or the EL (display panel such as panel of Electro-Luminescence) and constituting.Display part 22 is disposed at a side that becomes inner face when folding.At this display part 22, except the various menus that show relevant telephony feature, also can show the image of being photographed etc. by camera section 1.Camera section 1 for example is disposed at the inner face side of upper body 2A.But the position that camera section 1 is set is not limited thereto.
In camera module shown in Figure 30, the optical image that is formed by imaging lens system 20 converts electrical image pickup signal to by imaging apparatus, and this image pickup signal is output to the signal processing circuit of picture pick-up device base side by flexible substrate 5 and external connection terminals 6., in this camera module, using the related imaging lens system of present embodiment herein as imaging lens system 20, so, can obtain by the high-resolution image pickup signal of abundant aberration correction.In the picture pick-up device base side, can generate full resolution pricture according to this image pickup signal.
In addition, the picture pick-up device that present embodiment is related is not limited to the mobile phone with camera, for example is that digital static camera or PDA etc. also can.
Then, be described in more detail as the effect of the imaging lens system of above formation and effect, especially about the effect and the effect of conditional.
In the related imaging lens system of present embodiment, in integral body is during 4 lens constitute, the thickness DL of lens combination is remained proper range, and use aspheric surface efficiently and the optimization of seeking each lens shape, and seek the optimization that lens constitute in the mode that satisfies the defined terms formula, taking into full account manufacturing so that when cost do not uprise, guaranteed the cripeturaization of total length and obtained high imaging performance thus.
About aspherical shape, especially make the 4th lens L4 be changed to difformity, thereby proofread and correct filed curvature well from the image planes central part to periphery at central part and periphery.In the 4th lens L4, with the 1st lens L1, the 2nd lens L2, and the 3rd lens L3 compare, light beam is separated at every visual angle.Therefore, the 4th lens L4 by making the final lens face that approaches imaging apparatus most as the side near optical axis towards being concave shape as side, and at periphery towards being convex form as side, can suitably proofread and correct the aberration at every visual angle, be controlled as below the certain angle to the incident angle of light beam imaging apparatus.Thereby, when can alleviate the light intensity in the full field of imaging surface, help the correction of filed curvature or distortion aberration etc.
Generally, in camera-lens system, preferred telecentric iris (テ レ セ Application ト リ Star Network) promptly to the incident angle of the chief ray of imaging apparatus with respect to optical axis approaching parallel (at the incident angle of shooting face to the normal of shooting face near zero).In order to ensure this telecentric iris, preferably diaphragm St is disposed at object side as far as possible.On the other hand, if diaphragm St is disposed at from the lens face of the object side of the 1st lens L1 further to position that the object side direction is left, this part (diaphragm St and the distance of the lens face of close object side) is added as optical path length, and therefore, it is unfavorable to become aspect the densification that constitutes in integral body.Thereby, by on optical axis Z1, diaphragm St being disposed at the identical position of object side lens face vertex position with the 1st lens L1, or be disposed at the 1st lens L1 object side the vertex of surface position and the picture vertex of surface position of side between, can seek the cripeturaization of total length, and can guarantee telecentric iris.When paying attention to the guaranteeing of telecentric iris more, between the ora terminalis position E (with reference to Fig. 1) of the face of the object side of the vertex of surface position of the object side that on the optical axis diaphragm St is disposed at the 1st lens L1 and the 1st lens L1, get final product.
Below, the concrete meaning of each conditional is described.
Conditional (1) is about the focal distance f 3 of the 3rd lens L3.And conditional (3) is about the focal distance f 1 of the 1st lens L1.And conditional (7) is about the focal distance f 4 of the 4th lens L4.With total length is little state, in order to proofread and correct filed curvature well and to distort all aberrations such as aberration, and reaches sufficient peripheral light amount and suitable ejaculation angle, needs the balance of conditional (1) and conditional (3).And, need the balance of conditional (1) and conditional (7).
If exceed the upper limit of conditional (1), then there is the tendency at the ejaculation angle rust angle of light.If exceed the lower limit of conditional (1), then in the middle of filed curvature (the image planes gulf song) minus side (ア Application ダ-) too partially at visual angle.
In order to obtain better performance, the numerical range of conditional (1) is preferably:
0.4≦f3/f≦0.71?……(1′)
More preferably:
0.5 ≦ f3/f ≦ 0.65 ... (1 ") gets final product.
If exceed the upper limit of conditional (3), then the light amplification rate surplus of the 1st lens L1 diminishes, and is unfavorable for dwindling total length.If exceed lower limit, then the light amplification rate of the 1st lens L1 is superfluous becomes big, loses and other the balance of power of a lens, and loses filed curvature easily, distorts the balance of aberration and spherical aberration.
In order to obtain better performance, the numerical range of conditional (3) is preferably:
0.72≦f1/f≦0.80?……(3′)
More preferably:
0.75 ≦ f1/f ≦ 0.78 ... (3 ") get final product.
If exceed the upper limit of conditional (7), then in the middle of the filed curvature minus side too partially at visual angle.If exceed lower limit, then the filed curvature at middle visual angle has the trend of the positive side of deflection (オ-バ-).
In order to obtain better performance, the numerical range of conditional (7) is preferably:
—0.85≦f4/f≦—0.25?……(7′)
More preferably:
-0.50 ≦ f4/f ≦-0.25 ... (7 ") get final product.
Conditional (2) is about the center thickness D5 of the 3rd lens L3.If exceed the upper limit of conditional (2), then center thickness D5 becomes excessive, dwindle total length aspect unfavorable.If exceed lower limit, then center thickness D5 becomes too small, and manufacturing is bad.If dwindle total length, then make balance susceptibility (sensitivity) and all become greatly, be positioned at suitable scope by making lower limit, can reduce to make the susceptibility of balance.
In order to obtain better performance, the numerical range of conditional (2) is preferably:
0.19≦D5/f≦0.25?……(2′)
More preferably:
0.20 ≦ D5/f ≦ 0.24 ... (2 ") get final product.
The center thickness of conditional (4) regulation lens monomer.In this imaging lens system, actively use aspheric surface in order to seek high-performance.Aspheric surface helps densification and high performance, but when injection molding or mold pressing (モ-Le De) shaping, but for the good lens products of stable formation quality, and can suitably keep the mobile of moulding material or ejaculation pressure and pressurize when being shaped, be necessary to consider the processing conditions of stipulating.If exceed the upper limit of conditional (4), then be unfavorable for the miniaturization of lens.If exceed lower limit, the flowing of material in order to prevent to be shaped then, the transfer printing of face shape is not good aspect controlled pressure.
In order to seek miniaturization, and make that to make appropriateness better, the numerical range of conditional (4) is preferably:
0.11≦MIN(D)/f≦0.5?……(4′)。
More preferably:
0.12 ≦ MIN (D)/f ≦ 0.5 ... (4 ") get final product.
Conditional (5) and conditional (8) are about the thickness DL of the lens combination on the optical axis.In order to satisfy cripetura lens total length and to make the final lens face that approaches imaging apparatus most not too approach these two conditions of shooting face, be necessary the thickness DL of lens combination is made as suitable scope.If exceed the upper limit of conditional (5) or conditional (8), then be unfavorable for the cripeturaization of total length.Dwindle thickness DL and be directly connected to the cripeturaization of total length, but too dwindle thickness DL, the deterioration of aberration performance and the rapid decline of making assembling susceptibility (sensitivity) then take place if exceed the lower limit of conditional (5) or conditional (8).
For the cripetura total length, and obtain better performance, the numerical range of conditional (5) is preferred:
3.0mm≦DL≦3.8mm?……(5′)
More preferably,
3.0mm ≦ DL ≦ 3.5mm ... (5 ") get final product.
And the numerical range of conditional (8) is preferred:
0.85≦DL/f≦0.92?……(8′)
More preferably:
0.87 ≦ DL/f ≦ 0.90 ... (8 ") get final product.
The chromatic dispersion that conditional (6) is stipulated each lens by satisfying this numerical range and the Abbe number υ 1 of the 1st lens L1 relatively being made as greatly, can be sought the minimizing of a last chromatic aberation.If exceed the lower limit of conditional (6), then be unfavorable for the correction of a last chromatic aberation.
For correcting colour aberration more well, it is preferred further suitably to meet the following conditions.
υ1—(υ3+υ4)/2≧5?……(6′)
υ1—υ4≧5?……(6″)
The formula that satisfies condition (6 '), for example the either party at the 3rd lens L3 and the 4th lens L4 uses the bigger material of chromatic dispersion (dispersion), and helps the correction of multiplying power chromatic aberation.And (6 ") are relatively established greatlyyer with respect to the 4th lens L4 the Abbe number υ 1 of the 1st lens L1, can seek the reduction of a last chromatic aberation by the formula of satisfying condition.
Conditional (9) is about the paraxial radius of curvature R 3 of the face of the object side of the 2nd lens L2.And conditional (10) is about the paraxial radius of curvature R 1 of the face of the object side of the 1st lens L1.For total length, visual angle and ejaculation angle are remained suitable value, the curvature of the light amplification rate of the 1st lens L1 and the front of the 1st lens L1 produces bigger influence.At this moment, in the condition of formula (10), the condition and range that satisfies formula (9) is ideal aspect correcting spherical aberration and lateral aberration.
If exceed the upper limit of conditional (9), then spherical aberration, and the inclined to one side minus side of filed curvature, distortion become positive side (the line pivot (
I) type).If exceed conditional (9) lower limit, then spherical aberration, and filed curvature polarization side (オ-バ-), distorting becomes minus side (マ イ Na ス) (barrel-shaped (cup type)).And the light amplification rate grow of (jump ね and the go up the げ Ru) marginal ray that at the face of the object side of the 2nd lens L2, jumps is so make the susceptibility grow.
In order to obtain better performance, the numerical range of conditional (9) is preferably:
—0.8≦f/R3≦0?……(9′)
More preferably:
-0.7 ≦ f/R3 ≦ 0 ... (9 ") get final product.
If exceed the upper limit of conditional (10), then the light amplification rate at the face of the object side of the 1st lens L1 too much increases, and the inclined to one side minus side of spherical aberration becomes minus side (barrel-shaped (cup type)) and distort.If exceed lower limit, then the light amplification rate at the face of the object side of the 1st lens L1 too much reduces, dwindle total length aspect unfavorable.
In order to obtain better performance, the numerical range of conditional (10) is preferably:
1.54≦f/R1≦2.5?……(10′)
More preferably:
1.7 ≦ f/R1 ≦ 2.1 ... (10 ") get final product.
The paraxial radius of curvature R 1 of the object side of conditional (11) regulation the 1st lens L1 and the face of picture side, the suitable relation of R2.If exceed the upper limit of conditional (11), spherical aberration polarization side greatly especially then.If exceed lower limit, spherical aberration minus side partially greatly especially then.
In order to obtain better performance, the numerical range of conditional (11) is preferably:
—0.5≦R1/R2≦0?……(11′)。
Conditional (12) is about the shape of the 2nd lens L2.If exceed the upper limit of conditional (12), then dwindle aspect the ejaculation angle of light unfavorable.As exceed lower limit, then the 1st lens L1 and the 2nd lens L2 axle offset susceptibility separately becomes big, can not satisfy the manufacturing appropriateness.
Conditional (13) is about the synthetic focal length of the 1st lens L1 and the 2nd lens L2.Become the direction of anti-long distance formula (レ ト ロ Off オ-カ ス イ プ) if exceed the upper limit of conditional (13), then principal point is towards the picture side shifting, so, be difficult to the cripetura total length by principle.If exceed lower limit, then there is the tangent line image planes tendency of minus side too partially.And, the tendency that exists peripheral light amount to become too small.
In order to obtain better performance, the numerical range of conditional (13) is preferably:
1.0≦f12/f≦1.4?……(13′)
More preferably:
1.1 ≦ f12/f ≦ 1.2 ... (13 ") get final product.
Imaging lens system as described above, related according to present embodiment is kept high imaging performance when can realize the cripeturaization of total length, and makes the good lens combination of appropriateness.And, the camera module related according to present embodiment, because of make it to export with by the total length cripeturaization and have the corresponding image pickup signal of optical image that the imaging lens system of high imaging performance forms, so, when can seek the miniaturization as module integral body, can obtain high-resolution image pickup signal.And the picture pick-up device related according to present embodiment because of loading this camera module, so can obtain high-resolution image pickup signal in the miniaturization of seeking camera part, can obtain high-resolution photographs according to this image pickup signal.
[embodiment]
Then, the concrete numerical value embodiment to the related imaging lens system of present embodiment describes.Following, sum up the 1st to the 7th numerical value implementation column and describe.
Fig. 8 and Figure 15 represent to have the concrete lens data corresponding to the formation of imaging lens system shown in Figure 1.Especially, represent the lens data that it is basic, represent about aspheric data at Figure 15 at Fig. 8.Represent to have the related imaging lens system of couple embodiment 1 on the hurdle of the face number Si of lens data shown in Figure 8, with the face of the lens key element of close object side as the 1st (is the 0th with diaphragm St), along with the i that encloses symbol towards the mode that increases successively as side face number.Represent on the hurdle of radius of curvature R i corresponding at the symbol Ri that Fig. 1 enclosed, from the value (mm) of the radius-of-curvature of i face of object side.The interval (mm) from the optical axis of i face Si of object side and i+1 face Si+1 is represented on the hurdle of opposite interval D i too.Represent value to the refractive index of d line (587.6nm) from j optical parameter of object side on the Ndj hurdle.Represent value to the Abbe number of d line from j optical parameter of object side on υ dj hurdle.In the marge of Fig. 8 value as the focal distance f (mm) of all data representation total systems.
The imaging lens system that this embodiment 1 is related, the 1st lens L1 is a glass material, the 2nd lens L2 to the 4 lens L4 are resin material.
The imaging lens system that this embodiment 1 is related, the two sides of the 1st lens L1 to the 4 lens L4 all becomes aspherical shape.In the basic lens data of Fig. 8, represent to have near the numerical value of the radius-of-curvature the optical axis as those aspheric radius-of-curvature.
The aspherical surface data of representing the imaging lens system of embodiment 1 at Figure 15.In as the numerical value shown in the aspherical surface data, for 10 being " power exponent " at the end, expression is taken advantage of calculation " E " numerical value before in order to 10 for the represented numerical value of exponential function at the end immediately following thereafter numerical value for mark " E " expression.For example, if " 1.0E-02 ", then expression " 1.0 * 10
-2".
As aspherical surface data, charge to according to value with each coefficient Ai, K in the formula of the represented aspherical shape of following formula (A).Detailed it, Z represents that point on the aspheric surface that is positioned at the position of leaving optical axis height h is to the length of perpendicular (mm) that picture is drawn on plane (perpendicular to the plane of optical axis) that connects on aspheric surface summit.In the imaging lens system of embodiment 1, each aspheric surface is effectively used coefficient A3～A10 of the 3rd time～the 10th time as asphericity coefficient Ai and is represented.
Z＝C·h
2/{1+(1—K·C
2·h
2)
1/2}+ΣAi·h
i……(A)
Herein,
Z: the aspheric degree of depth (mm),
H: the distance from the optical axis to the lens face (highly) (mm),
K: eccentricity,
C: paraxial curvature=1/R
(R: paraxial radius-of-curvature),
Ai: the asphericity coefficient of the i time (i is the integer more than 3).
As the imaging lens system of above embodiment 1, with corresponding to the concrete lens data of the formation of imaging lens system shown in Figure 2 as embodiment 2, be shown in Fig. 9 and Figure 16.And, equally corresponding to the concrete lens data of the formation of the imaging lens system of Fig. 3～shown in Figure 7 as embodiment 3 to embodiment 7, be shown in Figure 10～Figure 14 and Figure 17～Figure 21.In those embodiment 2～7, as the imaging lens system of embodiment 1, the two sides of the 1st lens L1～the 4th lens L4 all becomes aspherical shape.
In addition, in embodiment 2～embodiment 5 and embodiment 7, the 1st lens L1～the 4th lens L4 all is a resin material.In embodiment 6, the 1st lens L1 is a glass material, and the 2nd lens L2～the 4th lens L4 is a resin material.
And, at Figure 22, each embodiment is gathered expression about above-mentioned pacing items formula (1)～(13) and other conditional (6 '), (value of 6 ").As shown in figure 22, the numerical range that breaks away from conditional (9) and conditional (10) and conditional (12) for embodiment 4.Beyond this, each embodiment is all become in the numerical range of pacing items formula.
Figure 23 (A)～Figure 23 (C) represents to have spherical aberration at the imaging lens system of embodiment 1, astigmatism, and distortion (distortion aberration) respectively.Represent that at each aberration diagram with e line (546.07nm) be the aberration of reference wavelength.In spherical aberration diagram and astigmatism figure, also represent aberration to F line (wavelength 486.13nm), C line (wavelength 656.27nm).Solid line is represented sagitta of arc direction (S) in astigmatism figure, and dotted line is represented the aberration of tangential direction (T).FNo. represent the F value, Y represents image height.
Similarly, at all aberration of Figure 24 (A)～Figure 24 (C) expression about the imaging lens system of embodiment 2.Similarly, at all aberration of Figure 25 (A)～Figure 25 (C) expression about the imaging lens system of embodiment 3, at all aberration of Figure 26 (A)～Figure 26 (C) expression about the imaging lens system of embodiment 4, at all aberration of Figure 27 (A)～Figure 27 (C) expression about the imaging lens system of embodiment 5, at all aberration of Figure 28 (A)～Figure 28 (C) expression, at all aberration of Figure 29 (A)～Figure 29 (C) expression about the imaging lens system of embodiment 7 about the imaging lens system of embodiment 6.
As can be known, can realize high imaging performance in the time of to the cripeturaization of each embodiment total length from above each numeric data and each aberration diagram.
In addition, the invention is not restricted to above-mentioned embodiment and each embodiment, can all distortion implement.For example, the radius-of-curvature of each lens composition, face at interval and the value of refractive index etc. be not limited in the value shown in above-mentioned each numerical value embodiment desirable other value.
Claims (11)
1. an imaging lens system is characterized in that,
Possess successively from object side:
The 1st lens, its at least 1 is aspherical shape, and the face of object side is convex surface near optical axis, and has positive light amplification rate;
The 2nd lens, its face as side is a concave surface near optical axis, and has negative light amplification rate;
The 3rd lens, its near optical axis with concave surface towards object side, and have positive meniscus shaped lens;
The 4th lens, its two sides are aspherical shape, and as the face of side near optical axis for concave shape, be convex form at periphery,
And, meet the following conditions formula and constitute:
0.35≦f3/f≦0.9……(1)
0.19≦D5/f≦0.5……(2)
0.65≦f1/f≦0.85……(3)
0.1≦MIN(D)/f≦1.0……(4)
3.0mm≦DL≦4.0mm……(5)
Herein,
F: whole focal length,
F1: the focal length of the 1st lens
F3: the focal length of the 3rd lens,
D5: the center thickness of the 3rd lens,
MIN (D): the value of minimum center thickness among the 1st to the 4th lens,
DL: the distance from the picture optical axis on summit, side of object side vertex of surface to the 4 lens of the 1st lens,
In addition, the unit of f, the MIN (D) in formula (4) is mm.
2. imaging lens system according to claim 1 is characterized in that,
On optical axis, at more close object side place, vertex of surface position than the picture side of above-mentioned the 1st lens, perhaps disposing diaphragm between the vertex of surface position at above-mentioned the 1st lens on the optical axis as the object side of the vertex of surface position of side and above-mentioned the 2nd lens, and the formula that further meets the following conditions:
υ1—(υ2+υ3+υ4)/3≧0……(6)
—1.2≦f4/f≦—0.25……(7)
0.71≦f1/f≦0.85……(3′ )
Herein,
F: whole focal length,
F1: the focal length of the 1st lens,
F4: the focal length of the 4th lens,
The Abbe number of 1: the 1 lens of υ,
The Abbe number of 2: the 2 lens of υ,
The Abbe number of 3: the 3 lens of υ,
The Abbe number of 4: the 4 lens of υ.
3. imaging lens system according to claim 1 is characterized in that,
On optical axis,, perhaps disposing diaphragm between the vertex of surface position at above-mentioned the 1st lens on the optical axis as the object side of the vertex of surface position of side and above-mentioned the 2nd lens at more close object side place, vertex of surface position than the picture side of above-mentioned the 1st lens.
4. imaging lens system according to claim 1 is characterized in that,
Formula meets the following conditions:
υ1—(υ2+υ3+υ4)/3≧0……(6)
The Abbe number of 1: the 1 lens of υ,
The Abbe number of 2: the 2 lens of υ,
The Abbe number of 3: the 3 lens of υ,
The Abbe number of 4: the 4 lens of υ.
5. imaging lens system according to claim 1 is characterized in that,
Formula meets the following conditions:
—1.2≦f4/f≦—0.25……(7)
F: whole focal length,
F4: the focal length of the 4th lens.
6. according to each described imaging lens system in the claim 1～5, it is characterized in that,
On optical axis, at the more close object side of picture side vertex position place's configuration diaphragm than above-mentioned the 1st lens, and the formula that further meets the following conditions:
0.85≦DL/f≦0.93……(8)
0.35≦f3/f≦0.71……(1′)
Herein,
F: whole focal length,
F3: the focal length of the 3rd lens,
DL: the distance from the picture optical axis on summit, side of object side vertex of surface to the 4 lens of the 1st lens.
7. according to each described imaging lens system in the claim 1～5, it is characterized in that,
The face of the picture side of above-mentioned the 1st lens is convex form near optical axis.
8. according to each described imaging lens system in the claim 1～5, it is characterized in that,
Formula further meets the following conditions:
—1.0≦f/R3≦0.4……(9)
Herein,
F: whole focal length,
R3: the paraxial radius-of-curvature of the face of the object side of the 2nd lens.
9. according to each described imaging lens system in the claim 1～5, it is characterized in that,
Formula further meets the following conditions:
2.05≦f/R1≦3.3……(10)
Herein,
F: whole focal length,
R1: the paraxial radius-of-curvature of the face of the object side of the 1st lens.
10. camera module is characterized in that possessing:
Each described imaging lens system in the claim 1～5; And
Imaging apparatus, its output and the corresponding image pickup signal of optical image that forms by above-mentioned imaging lens system.
11. a picture pick-up device is characterized in that,
Possess:
The described camera module of claim 10.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2007234394 | 2007-09-10 | ||
| JP2007234394A JP2009069195A (en) | 2007-09-10 | 2007-09-10 | Imaging lens, camera module and imaging equipment |
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| Publication Number | Publication Date |
|---|---|
| CN201255784Y true CN201255784Y (en) | 2009-06-10 |
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ID=40605568
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008202075479U Expired - Lifetime CN201255784Y (en) | 2007-09-10 | 2008-09-01 | Video taking lens, camera module and video taking apparatus |
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| Country | Link |
|---|---|
| JP (1) | JP2009069195A (en) |
| CN (1) | CN201255784Y (en) |
| TW (1) | TWM354079U (en) |
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| CN102946509A (en) * | 2012-11-20 | 2013-02-27 | 无锡成电科大科技发展有限公司 | Wireless network camera |
| US8976467B2 (en) | 2012-09-07 | 2015-03-10 | Genius Electronic Optical Co., Ltd. | Mobile device and optical imaging lens thereof |
| CN107850755A (en) * | 2015-05-14 | 2018-03-27 | 大阪燃气化学有限公司 | Photographical lens system |
| WO2021134784A1 (en) * | 2020-01-03 | 2021-07-08 | 南昌欧菲精密光学制品有限公司 | Optical system, camera module, and electronic device |
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| JP5368171B2 (en) * | 2009-05-21 | 2013-12-18 | パナソニック株式会社 | Imaging lens and imaging apparatus using the same |
| WO2010140515A1 (en) * | 2009-06-03 | 2010-12-09 | コニカミノルタオプト株式会社 | Image pickup lens, image pickup device having image pickup lens, and portable terminal having image pickup device |
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| CN103913823B (en) | 2013-11-29 | 2017-01-04 | 玉晶光电(厦门)有限公司 | Optical imaging lens and apply the electronic installation of this optical imaging lens |
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| JP4403672B2 (en) * | 2001-06-05 | 2010-01-27 | カシオ計算機株式会社 | Shooting lens |
| JP2005292559A (en) * | 2004-04-01 | 2005-10-20 | Sony Corp | Imaging lens, imaging unit and imaging apparatus |
| JP2007108534A (en) * | 2005-10-14 | 2007-04-26 | Konica Minolta Opto Inc | Imaging device |
| JP4879600B2 (en) * | 2006-02-15 | 2012-02-22 | 富士フイルム株式会社 | Imaging lens |
| JP4940740B2 (en) * | 2006-04-13 | 2012-05-30 | コニカミノルタオプト株式会社 | Imaging lens, imaging device provided with imaging lens, and portable terminal provided with imaging device |
| JP2008158413A (en) * | 2006-12-26 | 2008-07-10 | Canon Electronics Inc | Imaging lens and imaging apparatus having same |
| JP2008185880A (en) * | 2007-01-31 | 2008-08-14 | Enplas Corp | Imaging lens and imaging device equipped with the same |
| JP4924141B2 (en) * | 2007-03-28 | 2012-04-25 | コニカミノルタオプト株式会社 | Imaging lens, imaging device, and portable terminal |
-
2007
- 2007-09-10 JP JP2007234394A patent/JP2009069195A/en not_active Abandoned
-
2008
- 2008-09-01 CN CNU2008202075479U patent/CN201255784Y/en not_active Expired - Lifetime
- 2008-09-01 TW TW97215723U patent/TWM354079U/en not_active IP Right Cessation
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| US8976467B2 (en) | 2012-09-07 | 2015-03-10 | Genius Electronic Optical Co., Ltd. | Mobile device and optical imaging lens thereof |
| US9541731B2 (en) | 2012-09-07 | 2017-01-10 | Genius Electronic Optical Co., Ltd. | Mobile device and optical imaging lens thereof |
| CN102946509A (en) * | 2012-11-20 | 2013-02-27 | 无锡成电科大科技发展有限公司 | Wireless network camera |
| CN107850755A (en) * | 2015-05-14 | 2018-03-27 | 大阪燃气化学有限公司 | Photographical lens system |
| WO2021134784A1 (en) * | 2020-01-03 | 2021-07-08 | 南昌欧菲精密光学制品有限公司 | Optical system, camera module, and electronic device |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2009069195A (en) | 2009-04-02 |
| TWM354079U (en) | 2009-04-01 |
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